tests/test-c-vasprintf.c

   1 /* Test of c_asprintf() and c_vasprintf() functions.
   2    Copyright (C) 2011-2024 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 #include "c-vasprintf.h"
  20
  21 #include <locale.h>
  22 #include <stdio.h>
  23 #include <string.h>
  24
  25 #include "macros.h"
  26
  27 static int
  28 my_c_asprintf (char **result, const char *format, ...)
  29 {
  30   va_list args;
  31   int ret;
  32
  33   va_start (args, format);
  34   ret = c_vasprintf (result, format, args);
  35   va_end (args);
  36   return ret;
  37 }
  38
  39 int
  40 main (int argc, char *argv[])
  41 {
  42   /* configure should already have checked that the locale is supported.  */
  43   if (setlocale (LC_ALL, "") == NULL)
  44     return 1;
  45
  46   /* Test behaviour of snprintf() as a "control group".
  47      (We should be running in a locale where ',' is the decimal point.) */
  48   {
  49     char s[16];
  50
  51     snprintf (s, sizeof s, "%#.0f", 1.0);
  52     if (!strcmp (s, "1."))
  53       {
  54         /* Skip the test, since we're not in a useful locale for testing. */
  55         return 77;
  56       }
  57     ASSERT (!strcmp (s, "1,"));
  58   }
  59
  60   /* Test behaviour of c_asprintf() and c_vasprintf().
  61      They should always use '.' as the decimal point. */
  62   {
  63     int retval;
  64     char *s;
  65
  66     retval = c_asprintf (&s, "%#.0f", 1.0);
  67     ASSERT (s != NULL);
  68     ASSERT (!strcmp (s, "1."));
  69     ASSERT (retval == 2);
  70     free (s);
  71
  72     retval = my_c_asprintf (&s, "%#.0f", 1.0);
  73     ASSERT (s != NULL);
  74     ASSERT (!strcmp (s, "1."));
  75     ASSERT (retval == 2);
  76     free (s);
  77   }
  78
  79   return test_exit_status;
  80 }